Update NaturalStringExtensions build process to use Cake v3.0.0 (#73)

Author: augustoproiete

.config/dotnet-tools.json

@@ -3,7 +3,7 @@
   "isRoot": true,
   "tools": {
     "cake.tool": {
-      "version": "2.3.0",
+      "version": "3.0.0",
       "commands": [
         "dotnet-cake"
       ]

build.cake

@@ -1,5 +1,5 @@
-#addin "nuget:?package=Cake.MinVer&version=2.0.0"
-#addin "nuget:?package=Cake.Args&version=2.0.0"
+#addin "nuget:?package=Cake.MinVer&version=3.0.0"
+#addin "nuget:?package=Cake.Args&version=3.0.0"
 
 var target       = ArgumentOrDefault<string>("target") ?? "pack";
 var buildVersion = MinVer(s => s.WithTagPrefix("v").WithDefaultPreReleasePhase("preview"));